Suitcase



FIG. 1 is a front view of our design for a suitcase;

FIG. 2 is a side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof, opposite the side view in FIG. 2;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top, front and left side perspective view thereof. 

CLAIM The ornamental design for a suitcase, as shown and described. 